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ycow [4]
3 years ago
9

Only answer if you know the answer

Biology
1 answer:
Volgvan3 years ago
6 0

Answer:

B. A helicase enzyme unwinds the DNA molecule, then corresponding nucleotides are added to the separated original strand forming two separate semiconservative molecules

Explanation:

DNA Replication is an important phenomenon as far as cell division is concerned. It is the process whereby a DNA molecule doubles its content or forms two DNA molecules from one.

In the semi-conservative model of DNA replication, an enzyme called DNA helicase unwinds the double stranded DNA molecule into two single strands. The single strands are then used as template for DNA polymerase to synthesize another molecule of DNA. Hence, two separate DNA molecules comprising of one old strand and one new strand.

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Which of the following examples describes convergent evolution?
topjm [15]

Answer: Option E (B and D are the only examples.

Mediterranean ecosystem with hot dry summer and fire can be found on various continents across the globe. Plants in these ecosystem have evolve similar adaptations to survive these circumstances.

Echidnas are egg laying mammals that live in Australia and new Guinea. They are sometimes known as spiny anteaters since they are covered in spines and mostly eat ants and termites. As such they resemble south American anteaters and hedgehogs but are not closely related to them. Instead echidnas descended from an aquatic platypus like ancestor.

Explanation:

Divergent evolution is a process where different organisms with different anscetors evolve independently and develop similar traits due to their adaptation to similar environment.

Another example is the similarities between hummingbird and hummingbird moth, the evolved from different ancestors and yet posses similar characteristics.

6 0
3 years ago
What is carrying capacity?
VARVARA [1.3K]

Answer:

The carrying ability of an ecosystem is the overall growth rate of a biological species that can be supported by that area, provided the available food, habitat, water, and other resources.

Explanation:

A pond populated briefly by ten turtles, for such, would be sustainable for the species' population.

7 0
3 years ago
Cyanobacteria have been engineered to produce isobutanol directly. What advantage does this have over other alternative biofuels
irina1246 [14]
There exists the same question that has the following choices.

<span>a. It is an inherently renewable fuel source.
b. Multiple processing steps can be avoided.
c. They produce chemical energy through photosynthesis.
d. They make a biofuel alternative to gasoline.
</span>
The correct answer is letter <span>b. Multiple processing steps can be avoided.</span>
4 0
3 years ago
All of the following are functions of a coelom EXCEPT serving as a hydrostatic skeleton. processing and storing food. allows dig
Likurg_2 [28]

Answer:

Processing and storing food.

Explanation:

The coelom is the hollow structure formed in the organisms filled with the coelom fluid. The coelom is formed during embryogenesis which may be lined by the mesodermal layer or not.

The formation of coelom serves many functions in different organisms like it allows the internal movement of the organs in the body, allows the independent movement of the digestive tract, the fluid present in the cavity acts as a hydrostatic skeleton in the lower organism and cushions the internal organs.

The function that is not performed by the coelom is that it is not involved in the processing and storing food in organisms.

Thus, Processing and storing food is correct.

3 0
3 years ago
What happens to the number of bubbles given off by the plant as the light<br> intensity decreases?
Feliz [49]

Answer:

They decrease.

Explanation:

6 0
4 years ago
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